body {
  #clock {
    width: 500px;
    height: 500px;
    // background-color: #ccc;
    border: 5px solid rgba(58, 57, 57, 0.8);
    box-sizing: border-box;
    border-radius: 50%;
    box-shadow: 
      0 0 200px 0px rgba(100, 100, 100, 0.4),
      inset 0 0 100px 0px rgba(107, 107, 107, 0.2);

    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    top: 0;
    margin: auto;
    // 圆心样式 👇
    .circleCenter1 {
      width: 10px;
      height: 10px;
      border: 1px solid #000;
      // background-color: #000;
      border-radius: 50%;
      position: absolute;
      left: 0;
      right: 0;
      bottom: 0;
      top: 0;
      margin: auto;
      .circleCenter2 {
        width: 5px;
        height: 5px;
        border: 1px solid #000;
        // background-color: #000;
        border-radius: 50%;
        position: absolute;
        left: 0;
        right: 0;
        bottom: 0;
        top: 0;
        margin: auto;
      }
    }
    // 数字钟表样式 👇
    #numberClock {
      width: 70px;
      height: 30px;
      background-color: #ccc;
      position: absolute;
      left: 0;
      right: -200px;
      bottom: 0;
      top: -100px;
      margin: auto;
      display: flex;
      justify-content: space-evenly;
      align-items: center;
      .hour {
        width: 30%;
        height: 90%;
        background-color: #fff;
      }
      .minute {
        width: 30%;
        height: 90%;
        background-color: #fff;
      }
      .second {
        width: 30%;
        height: 90%;
        background-color: #fff;
      }
    }
    // 指针样式 👇
    .timehand {
      .secondhand {
        width: 400px;
        height: 400px;
        border-radius: 50%;
        // background-color: #8dd452;
        position: absolute;
        left: 0;
        right: 0;
        bottom: 0;
        top: 0;
        margin: auto;
        div {
          width: 2px;
          height: 200px;
          background-color: #ccc;
          margin: 0 auto;
        }
      }
      .minutehand {
        width: 360px;
        height: 360px;
        // background-color: rgb(151, 113, 113);
        border-radius: 50%;
        position: absolute;
        left: 0;
        right: 0;
        bottom: 0;
        top: 0;
        margin: auto;
        // transform: rotate(45deg);
        div {
          width: 3px;
          height: 180px;
          background-color: red;
          margin: 0 auto;
        }
      }
      .hourhand {
        width: 240px;
        height: 240px;
        // background-color: rgb(0, 0, 0);
        border-radius: 50%;
        position: absolute;
        left: 0;
        right: 0;
        bottom: 0;
        top: -0;
        margin: auto;
        // transform: rotate(-45deg);
        div {
          width: 5px;
          height: 120px;
          background-color: greenyellow;
          margin: 0 auto;
        }
      }
    }
  }
}